您要查找的是不是：
- Is this contract valid? 这份合同有法律效力吗?
- This contract is valid for three years. 这份合同有效期3年。
- How long is this ticket available (valid for)? 这票有效期是多长时间?
- Is this equipment tested for mechanical aptitude? 这台设备测定了其机械适应性了吗？
- Delivery is within the terms of this contract. 交货的内容都在这份合同的条款中。
- Is this reference book of any use to me? 这本参考书对我有用处吗？
- Is an indivisible part of this contract. 合同的附件是本合同不可分割的组成部分。
- It is this molecular motion that we call heat. 就是这种分子运动我们称之为热。
- The undermentioned is witness to this contract. 以下为本合同之见证人.
- Is this the original drawing or is it a copy? 这是原画还是模本?
- Any annex is the integral part of this contract. 本合同一切附件均为本合同的有效组成部分。
- This is also true for this contract. 伯恩: 这项合同也是如此。
- Is this game a league match or a friendly? 这场比赛是联赛还是友谊赛？
- Is this your first visit to London? 这是你第一次访问伦敦吗？
- We entered into this contract in the interests of both parties. 我们为了双方的利益签订这项合同。
- Front desk clerk. Is this Mr. Lie? 柜台服务员，请问你是李先生吗？
- John, is this the right way to operate the machine? 约翰，这是操作这台机器的正确方法吗？
- Here is this week's market price for sheep. 这是本星期的羊市价格。
- This contract shall be valid from the date when it is signed by both parties. 本合同自双方签字之日起生效。
- The undermentioned is witness to this contract . 以下为本合同之见证人.
